Correct Answer: B

Rationale: The correct answer is to monitor the client's skin under the halo vest. This is important to assess for signs of skin issues such as excessive sweating, redness, or blistering, which can lead to skin breakdown and infection. Choice A is incorrect because inspecting the pin site every 4 hours is necessary but not the priority in this case. Choice C is incorrect as it is not essential for two personnel to hold the halo device during repositioning. Choice D is incorrect because applying powder frequently can actually increase the risk of skin issues by clogging pores and causing irritation.

Correct Answer: D

Rationale: The correct answer is D. During an electroencephalogram (EEG), flashes of light or patterns are often used to stimulate the brain and provoke responses, helping to assess brain activity and the potential for seizures. Choices A, B, and C are incorrect because washing the hair, receiving a sedative, and refraining from eating are not usually related to EEG procedures and do not reflect understanding of the teaching provided by the nurse.

Correct Answer: A

Rationale: A sodium level of 122 mEq/L indicates hyponatremia, which is characterized by decreased deep tendon reflexes. Hyponatremia leads to neurological symptoms such as altered reflexes. Choices B, C, and D are not typically associated with hyponatremia. Positive Trousseau's sign is related to hypocalcemia, hypoactive bowel sounds can be seen in paralytic ileus or decreased peristalsis, and sticky mucous membranes are not specific findings related to sodium imbalances.

Correct Answer: D

Rationale: Clients who have seizures are at risk for injury and aspiration. Therefore, the nurse should instruct the family to position the client on their side during a seizure to maintain a clear airway. Placing a padded tongue depressor near the bedside (Choice A) is not recommended, as it can lead to oral injury during a seizure. Placing a pillow under the client's head (Choice B) can obstruct the airway and increase the risk of aspiration. Administering diazepam orally (Choice C) is not typically done by family members during a seizure; this is usually prescribed by healthcare providers for specific situations.

Correct Answer: B

Rationale: The correct answer is B: Respiratory alkalosis. In this scenario, the client is hyperventilating, leading to excessive elimination of carbon dioxide. As a result, the PaCO2 decreases, causing a decrease in hydrogen ion concentration and an increase in pH, resulting in respiratory alkalosis. Choice A, Respiratory acidosis, is incorrect because the ABG results show a low PaCO2, not an elevated one. Choices C and D, Metabolic acidosis and Metabolic alkalosis, do not align with the ABG results provided, which point towards a respiratory, not metabolic, imbalance.